I started looking at the pile of parts that I had from the YJ tear down. I looked at the switch and it was the same as the CJ so I put it in the Jeep. Same Issue. Did some more diagnosis on the thing and found the start relay would stick on even when the start wire was disconnected. I got a new starter solenoid and put that in.
I wired up a switch to the start wire so that I could shut off the power on that circuit so I could do some diagnosis on the thing. Well I tried to start the thing and the ICM was not getting power in or out of it. It also had a couple of large bubbles on the back side. I replaced it.
I put the ICM in and still it would not fire. Pulled a plug and grounded it and there was no spark. I checked to see if the distributer was turning , it was. At this pint I was thinking that the thing just didnt like me.
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Well at this point I was done trying to figure out what was wrong. That is when I thought mabe the coil was bad. I just happened to have one that was in the Ranger Pick up project that I am working on.
I popped coil in the Jeep and the thing started up and the power issue on the start wire went away. This thing runs a coil out of a 93 Ford ranger, cap, rotor, plugs, wires out of a 80s Ford straight 6.
So with all that said what could have been the reason for the coil back feeding the start wire off the switch?